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bq76940 - 3-series to 15-series cell battery monitor

Download the bq76940 datasheet PDF. This datasheet also covers the bq76920 variant, as both devices belong to the same 3-series to 15-series cell battery monitor family and are provided as variant models within a single manufacturer datasheet.

General Description

The BQ769x0 family of robust analog front-end (AFE) devices serves as part of a complete pack monitoring and protection solution for next-generation, high-power systems, such as light electric vehicles, power tools, and uninterruptible power supplies.

Key Features

  • AFE monitoring features.
  • Pure digital interface.
  • Internal ADC measures cell voltage, die temperature, and external thermistor.
  • A separate, internal ADC measures pack current (coulomb counter).
  • Directly supports up to three thermistors (103AT).
  • Hardware protection features.
  • Overcurrent in Discharge (OCD).
  • Short Circuit in Discharge (SCD).
  • Overvoltage (OV).
  • Undervoltage (UV).
  • Secondary protector fau.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (bq76920-etcTI.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer

Other Datasheets by Texas Instruments

Part Number Description
bq76920 3-series to 15-series cell battery monitor
bq76925 Host-Controlled Analog Front End
bq76930 3-series to 15-series cell battery monitor
bq76200 high-voltage battery pack front-end charge/discharge high-side NFET driver
BQ76PL102 Dual-Cell Li-Ion Battery Monitor

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
BQ76920, BQ76930, BQ76940 SLUSBK2I – OCTOBER 2013 – REVISED MARCH 2022 BQ769x0 3-Series to 15-Series Cell Battery Monitor Family for Li-Ion and Phosphate Applications 1 Features • AFE monitoring features – Pure digital interface – Internal ADC measures cell voltage, die temperature, and external thermistor – A separate, internal ADC measures pack current (coulomb counter) – Directly supports up to three thermistors (103AT) • Hardware protection features – Overcurrent in Discharge (OCD) – Short Circuit in Discharge (SCD) – Overvoltage (OV) – Undervoltage (UV) – Secondary protector fault detection • Additional features – Integrated cell balancing FETs – Charge, discharge low-side NCH FET drivers – Alert interrupt to host microcontroller – 2.5-V or 3.